The Eternal Space-Time Crystal Clock Ought To Be A Big Seller At Spencer's Gifts

I have read this
Scientific American article about how scientists have
figured out how to build
a clock that will continue telling time even after the universe no
longer exists four times now, and a) Of course I’m not smart
enough to really understand it. It has to do with creating an
electric field that will trap charged ions in a four-dimensional
crystal shape, and the ions’ natural “Coulomb repulsion” will start
them rotating in a circle. (“Coulomb repulsion” is the thing where
positively charged ions push away other positively charged ions and
negatively charged ions push away other negatively charged ions,
like with magnets.) The
rotation in the crystal will be frictionless, and
free of entropy, so it will never
stop—even after the rest of the universe reaches the state of
thermodynamic equilibrium (a.k.a. “heat death”) that we’re all
waiting for, and dissolves into formless anti-matter. B) This has
got to be the most useless gag gift I’ve ever heard of. A clock
that tells time after the universe ceases to exist?! I mean, it’s
like laser neutering for a pet rock, right?